求翻译：断路器在使用过程中，应该定期用工频耐压法检查固封极柱的真空度。（具体方法：将断路器分闸，在灭弧室断口施加42kV工频电压，维持一分钟，如发现灭弧室内有持续击穿，应更换固封极柱。）是什么意思？

Circuit breaker in the course of, employment should regularly check the fixed-frequency voltage method of vacuum sealing pole. (The specific method: the circuit breaker, 42kV in interrupter fracture frequency voltage applied to maintain a minute, if found interrupter has continued breakdown, solid s

circuit breaker during the course of their use, and it should be regularly used for pressure resistant closures firmware check law is extremely Martin the vacuum. circuit breakers (specific methods: Will the interrupters sub-gates, and sedimentological kV imposed 42 minutes working frequency voltage

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Circuit breaker in the process of using, you should periodically solid-poles of power frequency withstand voltage test of vacuum. (Specific methods: breakers break brake, imposed 42kV power frequency voltage in arc-quenching Chamber of fracture, last for a minute, if interrupter continued breakdown,

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